On Mittwoch, 9. Dezember 2020 21:46:25 CET Philip Gladstone wrote: > I have used the assembly service from jlcpcb a few times for small runs -- > it is absurdly cheap *if* you are using common surface mount components and > cheap for the less common ones. I then hand solder the connectors on when I > get the boards.
That's what I typically do as well. But you don't need a lot of support components for a M8T, it's almost not worth it. Effectively, you have 3 parts for the antenna power feed-in 1 decoupling cap for the module itself 1 resistor or ferrite bead for each signal you need to break out 3(4) parts for the power supply (LDO) USB needs just a few more parts, two resistors, a protection chip and a receptacle. > > Philip > > On Wed, Dec 9, 2020 at 3:27 PM Matthias Welwarsky <[email protected]> > > wrote: > > On Mittwoch, 9. Dezember 2020 14:57:55 CET Bob kb8tq wrote: > > > Hi > > > > > > I think the key point is: > > > > > > *IF* somebody wants to do a layout using the M8T, Bert already *has* a > > > “known good” PCB layout footprint in his inventory of useful stuff. > > > Since > > > the uBlox is a really odd part, you aren’t going to find that footprint > > > built into the standard layout programs. > > > > I have a known-good footprint and symbol for KiCAD, if anyone is > > interested. I > > also have KiCAD project for a small breakout board. It's not too > > featureful, > > no antenna power switching or monitoring, no support for antenna power > > other > > than from the built-in LDO. However, it has been successfully used in a > > GPSDO > > project. All components are hobbyist-friendly 0805, except for a LDO with > > SOT-23-5 footprint. > > > > > Bob > > > > > > > On Dec 8, 2020, at 6:26 PM, Bill Notfaded <[email protected]> wrote: > > > > > > > > That's a really old board though. An 8 series isn't pin compatible > > > > with > > > > > > say LEA-6T is it? The picture had a 5 series in it. > > > > > > > > Could you use something like this? > > > > https://github.com/PaulZC/NEO-M8T_GNSS_FeatherWing/blob/master/LEARN.md > > > > > > Bill > > > > > > > > On Tue, Dec 8, 2020, 10:30 AM Gregory Beat via time-nuts < > > > > > > > > [email protected]> wrote: > > > >> There are various Breakout (bare) Boards for the uBlox modules posted > > > > on > > > > > >> Internet. > > > >> SparkFun has carried them, in the past, and sometimes sold the bare > > > >> boards > > > >> without the uBlox module. > > > >> https://www.sparkfun.com/products/15005 > > > >> > > > >> StuartsProjects (Stuart Robinson, Cardiff, UK) has a bare board for > > > > the > > > > > >> Ublox MAX M8Q module. Sold on Tindie, used in high-altitude balloon > > > >> projects. > > > > https://www.tindie.com/products/stuartsprojects/ublox-max-8mq-gps-breakou > > > > > >> t-board-x-2/ > > > >> > > > >> Contact Limor “Ladyada” Fried at Adafruit, she might have bare boards > > > > OR > > > > > >> Gerbers for earlier or future products. > > > >> https://www.adafruit.com/?q=gps+breakout&p=1&sort=BestMatch > > > >> > > > >> Dan Watson designed one, for the 6-series five years ago. > > > >> He sometimes posted Gerber files. > > > > http://syncchannel.blogspot.com/2015/09/a-nearly-perfect-u-blox-gps-break > > > > > >> out.html > > > >> > > > >> greg > > > >> w9gb > > > >> == > > > >> Date: Mon, 7 Dec 2020 09:47:55 -0500 > > > >> From: paul swed <[email protected]> > > > >> To: Discussion of precise time and frequency > > > >> > > > >> measurement <[email protected]> > > > >> > > > >> Subject: Re: [time-nuts] Ublox 8T > > > >> > > > >> Bert Very attractive price. They appear to be on a cut out circuit > > > > board. > > > > > >> How are you connecting to them please? > > > >> Regards > > > >> Paul. > > > >> WB8TSL > > > >> _______________________________________________ > > > >> time-nuts mailing list -- [email protected] > > > >> To unsubscribe, go to > > > >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > > >> and follow the instructions there. > > > > > > > > _______________________________________________ > > > > time-nuts mailing list -- [email protected] > > > > To unsubscribe, go to > > > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and > > > > follow the instructions there. > > > > > > _______________________________________________ > > > time-nuts mailing list -- [email protected] > > > To unsubscribe, go to > > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and > > > > follow > > > > > the instructions there. > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow > the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
